Describe the transformation of EF to E1 to F1

What is the point-slope form of theequation for the line with a slope of-2 that passes through (1, 4)? a y + 1 = -2(x + 4)b y-1=-2(x-4)c y + 4 = -2(x + 1)d y - 4 = -2(x - 1)

Which math sentence can be used to determine if the triangle is a right triangle?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9